Notes
Notes & briefs
Primers, field manuals, and research briefs — the kind of writing that's too long to tweet and too specific to belong on a homepage.
A Quick Primer — Pretraining, RL, Mech Interp, Harnesses
A short rundown of five overlapping ideas in modern AI — pretraining and scaling laws, reinforcement learning, mechanistic interpretability, and the harnesses that wrap a model in a loop — with first-party sources to keep reading.
Consumer Credit Risk
Lend money to strangers, get most of it back. A primer on the expected-loss decomposition, the metrics credit teams watch every morning, and where four sample lending products earn (and absorb) loss.
Pivotal Health — Competitive Research Brief
A research brief on Pivotal Health, a startup operating inside the Independent Dispute Resolution market created by the No Surprises Act — covering the business model, who actually pays, and the operational reality of the IDR claim lifecycle.